(a(i))[3]
Show that the equation reduces to $5x^2 + 30x - 39 = 0$.
(a(ii))[3]
Solve the equation $5x^2 + 30x - 39 = 0$. Make your working clear and give your answers correct to $2$ decimal places.
(a(iii))[2]
Calculate the triangle's area.
(b)[4]
Calculate the shortest distance from $A$ to line $BC$.